Bulked up by a recent arrest in the Sasser worm case, Microsoft is confident that the creators of the infamous MyDoom and Blaster worms will be brought to justice. On Tuesday, Microsoft Deputy General Counsel Nancy Anderson said the software giant's $5 million reward program is beginning to pay off--and future arrests are likely. nderson said Microsoft provided technical assistance to the FBI, Secret Service and German authorities that led to the arrest on Saturday of the teenager believed to be responsible for creating both the Sasser and Netsky worms that infected millions of PCs. Information leading to the arrest resulted in part from Microsoft's antivirus reward program.